Coiled spring attachment



Aug. 20, 1929; w. KIWI I COILED SPRING ATTACHMENT I Filed July 17 1926 Patented Aug; 20, 1929.

UNITED STATES PATENT OFFICE.

WALTER KIWI, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO COATES E. LANDELL, OF PHILADELPHIA, PENNSYLVANIA.

COILED SPRING ATTACHMENT.

Application filed July 17,

This invention relates to coiled springs such as used for mattresses, automobile cushions and the like and has more especial relation to the manner of attaching together adjacent coils and their upper and lower portions.

The leading object of the present invention is to provide a group of coiled springs so connected as to provide maximum flexibility whereby the coils as a group may be compactly rolled for transportation and storage purposes.

A further object is to prevent adjacent coils from becoming detached.

A further object is to provide a means of coil connection which may be accomplished by machinery in lieu of by hand as now generally practiced.

A still further object of the present invention is to provide a means of coil connection in which the connection comprises a ring made up of a series of turns concentric in.

character.

IVith these and other objects in view the invention consists of the novel construction hereinafter described and finally claimed.

The nature, characteristic features and scope of the invention will be more fully understood from the following description taken in connection with the accompanying drawings forming part hereof, and in which Fig. 1, is a view in plan illustrating the manner of securing adjacent coils together.

Fig. 2, is a View in elevation of Fig. 1.

Fig. 3, is a view in elevation, partly sectioned, and each coil contained in a pocket of textile material and further-illustrating the connecting rings as passing through the pocket material; and

Fig. 4 is a View illustrating several coiled springs connected as in Fig. 1, the springs being compressed and in the act of being folded one upon the other.

For the purpose of illustrating my invention I have shown in the accompanying drawings one form thereof which is at present preferred by me, since the same has been found in practice to give satisfactory and reliable results, aithough it is to be understood that the various instrumentalities of which my invention consists can be variously arranged and organized and that my invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described.

whereby said springs may be compressed and 1926. Serial No. 123,058.

In the drawings the reference numeral 1 designates a plurality or group of coiled springs as connected together as a unit for the support of a mattress, automobile cushion or like article. These springs may be used as shown in Figs. 1 and 2 or may be bound together with strips of textile material 3 as will be understood in the art. Connectin adjacent springs, both at their tops and bottoms, are rings 2 of metal comprised of a plurality of concentrically coiled turns. These rings are applied by machinery in contradistinction to being applied by hand. One type of apparatus which has been found admirably adapted for the automatic application of these rings is disclosed in my copending application for Letters Patent. By applying these rings by means of automatic machinery a perfectly circular ring is formed around adjacent portions of coiled springs. Thus, while the ring is amply large to permit free movement of one spring with respect to another, thereby permitting the group of springs to be folded into compact form for shipping or storage, one spring cannot become detached from an adjacent ring due to the nature of the concentric turns or coils of the ring as is readily apparent. Also the rings in question tend to permit of a group of coiled springs yielding or responding more readily to body movements because of the very loose yet efiicient connection as furnished by said rings. In the structure shown in Fig. 3, the rings when being formed are passed directly through the textile material 3 thus securing the latter with respect to the'coiled springs.

IVhat I claim is:

A mat of coiled springs arranged side by side to comprise a single unit, both top and bottom coils of adjacent springs being loosely connected together at diametrically opposite points by means of individual, compact, wire rings, each ring comprising a plurality of concentrically wound strands of wire effectively interlocking said springs but providing a maximum of play and freedom of movement one with respect to the other,

folded one upon the other without angular distortion of the diametrically connected coils of the springs.

WALTER KIWI. 

